I think you should complain —______,of course, you are happy with the way things are.
| A．if | B．unless | C．as | D．because |
Having no enough time to practice, the girl wondered whether she _____ pass the driving test.
| A．should | B．could | C．might | D．must |
I recorded the professor’s speech on my cellphone _____ I could listen to it several times later.
| A．in case | B．now that | C．even though | D．so that |
—You seem tired, David.
—Yes. I _____ all day long and can’t wait to go to bed now.
| A．am working | B．had been working |
| C．have been working | D．was working |
She has _____ a great deal of money, hoping that she can travel around the world after she retires.
| A．put on | B．put up | C．put off | D．put away |
Guang Zhou’s traffic facilities have been greatly improved _____ an advanced new light railway for the Asian Games.
| A．as a result | B．thanks to | C．in case of | D．in response to |